Patents by Inventor Andre Guimard

Andre Guimard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of controlling detonators fitted with integrated delay electronic ignition modules, encoded firing control and encoded ignition module assembly for implementation purposes
    Patent number: 5520114
    Abstract: Method according to which, the programming unit (18) transmits, after completion of the programming of the ignition modules, the delay times also programmed to the firing control unit (17). The firing control unit (17) can interrogate simultaneously the ignition modules (15) which send back the information requested to it. The encoded firing control assembly and the encoded ignition modules enable to implement the process.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: May 28, 1996
    Assignee: Davey Bickford
    Inventors: Andre Guimard, Denis Harle, Claude Pathe
  • Pressure measurement sonde
    Patent number: 4455875
    Abstract: A pressure measurement sonde of the type comprising two piezoelectric detectors, one being used for pressure measurements and the other being used as a reference detector. The latter is used to compensate at least partly, the effects due to temperature variations. This sonde includes means for favoring the heat exchanges of said detectors with the surrounding medium and for substantially balancing the heat exchange rates of each of said detectors with the surrounding medium. The sonde is particulary adapted to the carrying out of pressure measurements in oil wells.
    Type: Grant
    Filed: December 22, 1981
    Date of Patent: June 26, 1984
    Assignee: Schlumberger Technology Corporation
    Inventors: Andre Guimard, Jacques Lemarchand